Torsion sensor magnetic ring structure

Abstract

A torsion sensor magnetic ring structure includes a seat and magnetic ring, wherein the magnetic ring is formed by punching a metal plate; a long side of a substrate is formed with a plurality of integral spaced magnetic teeth, one narrow end of the substrate is formed into an engagement tenon, and another narrow end thereof an engagement mortise, the substrate is wound and the tenon is in engagement with the engagement mortise to form into the circular magnetic ring. Therefore, the present invention is simpler than conventional magnetic rings in structure, and capable of accurately lowering the material cost and effectively reducing the volume and space.

I claim: 
     
       1. A torsion sensor magnetic ring structure, comprising a seat and magnetic ring, wherein said magnetic ring is formed by punching a metal plate; a long side of a substrate is formed with a plurality of integral spaced magnetic teeth, one narrow end of said substrate is formed into an engagement tenon, and another narrow end thereof an engagement mortise, said substrate is wound and said tenon is in engagement with said engagement mortise to form into said circular magnetic ring,
 wherein the circular magnetic ring comprises a circumferential plate that extends in a circumferential direction and has two opposite edges spaced from each other in an axial direction, wherein one of the opposite edges that are spaced from each other in the axial direction defines the long side of the substrate and the plurality of magnetic teeth are formed to extend from the one of the opposite edges in the axial direction and are spaced from each other in a circumferential direction. 
 
     
     
       2. The structure according to  claim 1 , wherein said substrate of said magnetic ring is partially exposed when said magnetic ring is in combination with said seat.